package com.bileetacrm;

import android.app.Activity;
import android.view.GestureDetector;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.MotionEvent;

public class SimpleGestureFilter extends SimpleOnGestureListener{
	 
	     public final static int SWIPE_UP    = 1;
		 public final static int SWIPE_DOWN  = 2;
		 public final static int SWIPE_LEFT  = 3;
		 public final static int SWIPE_RIGHT = 4;
		 
		 public final static int MODE_TRANSPARENT = 0;
		 public final static int MODE_SOLID       = 1;
		 public final static int MODE_DYNAMIC     = 2;
		 
		 private final static int ACTION_FAKE = -13; //just an unlikely number
		 private int swipe_Min_Distance = 100;
		 private int swipe_Max_Distance = 350;
		 private int swipe_Min_Velocity = 100;
	 
	 private int mode             = MODE_DYNAMIC;
	 private boolean running      = true;
	 private boolean tapIndicator = false;
	 
	 private Activity context;
	 private GestureDetector detector;
	 private SimpleGestureListener listener;
	 
	 public SimpleGestureFilter(Activity context,SimpleGestureListener sgl) {
	 
	  this.context = context;
	  this.detector = new GestureDetector(context, this);
	  this.listener = sgl;
	 }
	 
	 public void onTouchEvent(MotionEvent event){
	 
	   if(!this.running)
	  return; 
	 
	   boolean result = this.detector.onTouchEvent(event);
	 
	   if(this.mode == MODE_SOLID)
	    event.setAction(MotionEvent.ACTION_CANCEL);
	   else if (this.mode == MODE_DYNAMIC) {
	 
	     if(event.getAction() == ACTION_FAKE)
	       event.setAction(MotionEvent.ACTION_UP);
	     else if (result)
	       event.setAction(MotionEvent.ACTION_CANCEL);
	     else if(this.tapIndicator){
	      event.setAction(MotionEvent.ACTION_DOWN);
	      this.tapIndicator = false;
	     }
	 
	   }
	   //else just do nothing, it's Transparent
	 }
	 
	 public void setMode(int m){
	  this.mode = m;
	 }
	 
	 public int getMode(){
	  return this.mode;
	 }
	 
	 public void setEnabled(boolean status){
	  this.running = status;
	 }
	 
	 public void setSwipeMaxDistance(int distance){
	  this.swipe_Max_Distance = distance;
	 }
	 
	 public void setSwipeMinDistance(int distance){
	  this.swipe_Min_Distance = distance;
	 }
	 
	 public void setSwipeMinVelocity(int distance){
	  this.swipe_Min_Velocity = distance;
	 }
	 
	 public int getSwipeMaxDistance(){
	  return this.swipe_Max_Distance;
	 }
	 
	 public int getSwipeMinDistance(){
	  return this.swipe_Min_Distance;
	 }
	 
	 public int getSwipeMinVelocity(){
	  return this.swipe_Min_Velocity;
	 }
	 
	 @Override
	 	 public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX,
	 	   float velocityY) {
	 	 
	 	  final float xDistance = Math.abs(e1.getX() - e2.getX());
	 	  final float yDistance = Math.abs(e1.getY() - e2.getY());
	 	 
	 	  if(xDistance > this.swipe_Max_Distance || yDistance > this.swipe_Max_Distance)
	 	   return false;
	 	 
	 	  velocityX = Math.abs(velocityX);
	 	  velocityY = Math.abs(velocityY);
	 	        boolean result = false;
	 	 
	 	  if(velocityX > this.swipe_Min_Velocity && xDistance > this.swipe_Min_Distance){
	 	   if(e1.getX() > e2.getX()) // right to left
	 	    this.listener.onSwipe(SWIPE_LEFT);
	 	   else
	 	    this.listener.onSwipe(SWIPE_RIGHT);
	 	 
	 	   result = true;
	 	  }
	 	  else if(velocityY > this.swipe_Min_Velocity && yDistance > this.swipe_Min_Distance){
	 	   if(e1.getY() > e2.getY()) // bottom to up
	 	    this.listener.onSwipe(SWIPE_UP);
	 	   else
	 	    this.listener.onSwipe(SWIPE_DOWN);
	 	 
	 	   result = true;
	 	  }
	 	 
		   return result;
	 	 }
	 
	 @Override
	 public boolean onSingleTapUp(MotionEvent e) {
	  this.tapIndicator = true;
	  return false;
	 }
	 
	 @Override
	 public boolean onDoubleTap(MotionEvent arg) {
	  this.listener.onDoubleTap();;
	  return true;
	 }
	 
	 @Override
	 public boolean onDoubleTapEvent(MotionEvent arg) {
	  return true;
	 }
	 
	 @Override
	 public boolean onSingleTapConfirmed(MotionEvent arg) {
	 
	  if(this.mode == MODE_DYNAMIC){        // we owe an ACTION_UP, so we fake an
	     arg.setAction(ACTION_FAKE);      //action which will be converted to an ACTION_UP later.
	     this.context.dispatchTouchEvent(arg);
	  }  
	 
	  return false;
	 }
	 
	    static interface SimpleGestureListener{
	     void onSwipe(int direction);
	     void onDoubleTap();
	 }
	 
	}
